Selection.Move (Word)

Collapses the specified selection to its start or end position and then moves the collapsed object by the specified number of units. This method returns a Long value that represents the number of units by which the selection was moved, or it returns 0 (zero) if the move was unsuccessful.

The start and end positions of a collapsed range or selection are equal. Applying the Move method to a range doesn't rearrange text in the document. Instead, it redefines the range to refer to a new location in the document. If you apply the Move method to any range other than a Range object variable (for example, Selection.Paragraphs(3).Range.Move), the method has no effect. Moving a Selection object collapses the selection and moves the insertion point either forward or backward in the document.

Move (Unit, Count)

If Selection.StoryType = wdMainTextStory Then 
 wUnits = Selection.Move(Unit:=wdWord, Count:=2) 
 If wUnits < 2 Then _ 
 MsgBox "Selection is at the end of the document" 
End If

Arguments

Optional arguments

The following arguments are optional

Unit (WdUnits) - The unit by which to move the ending character position.

Here you can find possible values for WdUnits

Count (Long) - The number of units by which the specified range or selection is to be moved. If Count is a positive number, the object is collapsed to its end position and moved backward in the document by the specified number of units. If Count is a negative number, the object is collapsed to its start position and moved forward by the specified number of units. The default value is 1. You can also control the collapse direction by using the Collapse method before using the Move method. If the range or selection is in the middle of a unit or isn't collapsed, moving it to the beginning or end of the unit counts as moving it one full unit.